<template>
  <div class="search">
    <Card>
      <Row class="operation">
        <Button @click="add" type="primary" icon="md-add">添加城市</Button>
        <Button @click="addRoot" icon="md-add">添加省份</Button>
        <Button @click="delAll" icon="md-trash">删除</Button>
        <Button @click="getParentList" icon="md-refresh">刷新</Button>
      </Row>
      <Row type="flex" justify="start" class="code-row-bg">
        <Col span="6">
          <Alert show-icon>
            当前选择编辑：
            <span class="select-title">{{editTitle}}</span>
            <a class="select-clear" v-if="form.parentId" @click="cancelEdit">取消选择</a>
          </Alert>
          <div class="tree-bar" :style="{maxHeight: maxHeight}">
            <Tree
              ref="tree"
              :data="data"
              :load-data="loadData"
              @on-check-change="changeSelect"
              @on-select-change="selectTree"
              :check-strictly="!strict"
            ></Tree>
          </div>
          <Spin size="large" fix v-if="loading"></Spin>
        </Col>
        <Col span="9" style="margin-left:10px">
          <Form ref="form" :model="form" :label-width="95">
            <FormItem label="城市名称" prop="title">
              <Input v-model="form.title" />
            </FormItem>
            <FormItem label="城市索引(A-Z)" prop="areaIndex">
              <Select v-model="form.areaIndex">
                <Option v-for="(item, index) in letterList" :key="index" :value="item">{{item}}</Option>
              </Select>
            </FormItem>
            <FormItem label="是否启用" prop="status">
              <i-switch size="large" v-model="form.status" :true-value="0" :false-value="-1">
                <span slot="open">启用</span>
                <span slot="close">禁用</span>
              </i-switch>
            </FormItem>
            <Form-item>
              <Button
                style="margin-right:5px"
                @click="submitEdit"
                :loading="submitLoading"
                type="primary"
                icon="ios-create-outline"
              >修改并保存</Button>
              <Button @click="handleReset">重置</Button>
            </Form-item>
          </Form>
        </Col>
      </Row>
    </Card>

    <Modal :title="modalTitle" v-model="modalVisible" :mask-closable="false" :width="500">
      <Form ref="formAdd" :model="formAdd" :label-width="95" :rules="formValidate">
        <div v-if="showParent">
          <FormItem label="上级城市：">{{form.title}}</FormItem>
        </div>
        <FormItem label="城市名称" prop="title">
          <Input v-model="formAdd.title" />
        </FormItem>
        <FormItem label="城市索引(A-Z)" prop="areaIndex">
          <Select v-model="formAdd.areaIndex">
            <Option v-for="(item, index) in letterList" :key="index" :value="item">{{item}}</Option>
          </Select>
        </FormItem>
        <FormItem label="是否启用" prop="status">
          <i-switch size="large" v-model="formAdd.status" :true-value="0" :false-value="-1">
            <span slot="open">启用</span>
            <span slot="close">禁用</span>
          </i-switch>
        </FormItem>
      </Form>
      <div slot="footer">
        <Button type="text" @click="cancelAdd">取消</Button>
        <Button type="primary" :loading="submitLoading" @click="submitAdd">提交</Button>
      </div>
    </Modal>
  </div>
</template>

<script>
import {
  initDepartment,
  loadDepartment,
  addDepartment,
  editDepartment,
  deleteDepartment,
  searchDepartment,
  getUserByDepartmentId
} from "@/api/index";
export default {
  name: "department-manage",
  data() {
    return {
      id: "",
      loading: true,
      maxHeight: "500px",
      strict: true,
      userLoading: false,
      loadingEdit: true,
      modalVisible: false,
      selectList: [],
      selectCount: 0,
      showParent: false,
      modalTitle: "",
      editTitle: "",
      searchKey: "",
      letterList: [],
      form: {
        title: "",
        parentId: "",
        areaIndex: "",
        status: 0
      },
      formAdd: {},
      formValidate: {
        title: [{ required: true, message: "名称不能为空", trigger: "blur" }],
        areaIndex: [{ required: true, message: "索引不能为空", trigger: "change" }],
      },
      submitLoading: false,
      data: [],
      dataEdit: [],
      users: []
    };
  },
  methods: {
    init() {
      this.getParentList();
      this.getParentListEdit();
      this.letter();
    },
    // 使用js生成26个英文字母
    letter() {
      for (let i = 0; i < 26; i++) {
        this.letterList.push(String.fromCharCode(65 + i));
      }
    },
    getParentList() {
      this.loading = true;
      this.postRequest("/area/getBackAreaList").then(res => {
        this.loading = false;
        console.log(res);
        if (res.success) {
          res.result.data.forEach(function(e) {
            if (e.isParent) {
              e.loading = false;
              e.children = [];
            }
          });
          this.data = res.result.data;
        }
      });
    },
    getParentListEdit() {
      this.loadingEdit = true;
      this.postRequest("/area/getBackAreaList").then(res => {
        this.loadingEdit = false;
        if (res.success) {
          res.result.data.forEach(function(e) {
            if (e.isParent) {
              e.loading = false;
              e.children = [];
            }
          });
          // 头部加入一级
          // let first = {
          //   id: "0",
          //   title: "一级部门"
          // };
          // res.result.unshift(first);
          this.dataEdit = res.result.data;
        }
      });
    },
    loadData(item, callback) {
      console.log(item);
      let param = {
        pid: item.id
      };
      console.log(param);
      this.postRequest("/area/getBackAreaList", param).then(res => {
        // loadDepartment(item.id).then(res => {
        console.log(res);
        if (res.success) {
          res.result.data.forEach(function(e) {
            if (e.isParent) {
              e.loading = false;
              e.children = [];
            }
          });
          callback(res.result.data);
        }
      });
    },
    search() {
      if (this.searchKey) {
        this.loading = true;
        searchDepartment({ title: this.searchKey }).then(res => {
          this.loading = false;
          if (res.success) {
            this.data = res.result;
          }
        });
      } else {
        this.getParentList();
      }
    },
    selectTree(v) {
      console.log(v);
      if (v.length > 0) {
        // 转换null为""
        for (let attr in v[0]) {
          if (v[0][attr] == null) {
            v[0][attr] = "";
          }
        }
        let str = JSON.stringify(v[0]);
        let data = JSON.parse(str);
        console.log(data);
        this.id = data.id;
        this.form.parentId = data.parentId;
        this.form.title = data.title;
        this.form.areaIndex = data.areaIndex;
        this.form.status = data.status;
        this.editTitle = data.title;
      }
    },
    cancelEdit() {
      let data = this.$refs.tree.getSelectedNodes()[0];
      if (data) {
        data.selected = false;
      }
      this.$refs.form.resetFields();
      delete this.form.id;
      this.form.parentId = ""
      this.editTitle = "";
    },
    selectTreeEdit(v) {
      if (v.length > 0) {
        // 转换null为""
        for (let attr in v[0]) {
          if (v[0][attr] == null) {
            v[0][attr] = "";
          }
        }
        let str = JSON.stringify(v[0]);
        let data = JSON.parse(str);
        console.log(data);
        this.form.parentId = data.id;
        this.form.title = data.title;
      }
    },
    cancelAdd() {
      this.modalVisible = false;
    },
    handleReset() {
      this.$refs.form.resetFields();
      this.form.status = 0;
    },
    submitEdit() {
      console.log(this.id);
      this.submitLoading = true;
      this.form.id = this.id;
      console.log(this.form);
      this.postRequest("/area/insertOrderUpdateArea", this.form).then(res => {
        this.submitLoading = false;
        if (res.success) {
          this.$Message.success("编辑成功");
          this.init();
          this.modalVisible = false;
        }
      });
    },
    submitAdd() {
      this.$refs.formAdd.validate(valid => {
        if (valid) {
          this.submitLoading = true;
          console.log(this.formAdd);
          this.postRequest("/area/insertOrderUpdateArea", this.formAdd).then(
            res => {
              this.submitLoading = false;
              console.log(res);
              if (res.success) {
                this.$Message.success("添加成功");
                this.init();
                this.modalVisible = false;
              }
            }
          );
        }
      });
    },
    add() {
      if (this.form.parentId == "" || this.form.parentId == null) {
        this.$Message.warning("请先点击选择一个城市");
        return;
      }
      this.modalTitle = "添加子城市";
      this.showParent = true;
      this.formAdd = {
        parentId: this.id,
        status: 0
      };
      this.modalVisible = true;
    },
    addRoot() {
      this.modalTitle = "添加一级城市";
      this.showParent = false;
      this.formAdd = {
        status: 0
      };
      this.modalVisible = true;
    },
    changeSelect(v) {
      console.log(v);
      this.selectCount = v.length;
      this.selectList = v;
    },
    delAll() {
      if (this.form.parentId == "" || this.form.parentId == null) {
        this.$Message.warning("请先点击选择要删除的城市");
        return;
      }
      this.$Modal.confirm({
        title: "确认删除",
        content: "您确认要删除所选的数据?",
        onOk: () => {
          var params = {
            ids: this.id
          };
          this.postRequest("/area/removeArea", params).then(res => {
            console.log(res);
            if (res.success) {
              this.$Message.success("删除成功");
              this.form.parentId = "";
              this.editTitle = ''
              this.init();
            }
          });
        }
      });
    }
  },
  mounted() {
    // 计算高度
    let height = document.documentElement.clientHeight;
    this.maxHeight = Number(height - 287) + "px";
    this.init();
  }
};
</script>

<style  scoped>
.operation {
  margin-bottom: 2vh;
}
.select-count {
  font-size: 13px;
  font-weight: 600;
  color: #40a9ff;
}
.select-title {
  font-size: 12px;
  font-weight: 600;
  color: #40a9ff;
}
.select-clear {
  margin-left: 10px;
}
.page {
  margin-top: 2vh;
}
.drop-down {
  font-size: 13px;
  margin-left: 5px;
}

.ivu-tree-empty {
  margin-top: 10px;
}

.tree-bar {
  overflow: auto;
  margin-top: 5px;
}

.tree-bar::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.tree-bar::-webkit-scrollbar-thumb {
  border-radius: 4px;
  -webkit-box-shadow: inset 0 0 2px #d1d1d1;
  background: #e4e4e4;
}

.ivu-tree .ivu-tree-empty {
  margin-top: 10px;
  font-size: 12px;
}
</style>